This week's theme is sleep disorders. Does your sleep become more shallow with age? Also, what are "early awakening" and "Awakening Mid-Way"?!
Non-REM Sleep
نوم حركة العين غير السريعة غير ر.ي.م
Non-REM-Schlaf






Sueño No-REM
Fase No-REM
Sommeil lent (à ondes lentes)
ou non REM
Sonno non-REM
Sono Não-REM